公开(公告)号：US5227740A

公开(公告)日：1993-07-13

申请号：US864813

申请日：1992-03-31

申请人： Wolfgan Steinhagen ,  Ulrich Kaiser

发明人： Wolfgan Steinhagen ,  Ulrich Kaiser

IPC分类号： G01R19/04

CPC分类号： G01R19/04

摘要： A circuit arrangement is described with the aid of which a control signal can be generated in dependence upon the occurrence of an extreme value of a sinusoidal oscillation. The circuit arrangement (10) includes a storage member (22) which is adapted to be charged via a diode (20) to one of the extreme values of the sinusoidal oscillation. A discharge path (26) for the storage member (22) is present, the time constant of which is so dimensioned that within the period duration of the sinusoidal oscillation an appreciable discharge of the storage member (22) takes place. A switch element (24) controllable by the charge voltage of the storage member (22) furnishes the control signal at its output (14) for the period of time during which the charge voltage at the storage member (22) is smaller than the extreme value of the sinusoidal oscillation. The circuit arrangement can be used in maintaining the oscillations of a resonance circuit stimulated to oscillate by means of a momentary HF carrier wave pulse.

摘要翻译： 描述电路布置，借助于此可以根据正弦波振荡的极值的出现产生控制信号。 电路装置（10）包括一个适于通过二极管（20）充电到正弦振荡的极值之一的存储构件（22）。 存在用于存储构件（22）的放电路径（26），其时间常数设定为在正弦振荡的持续时间内存在存储构件（22）的明显放电。 可由存储构件（22）的充电电压控制的开关元件（24）在其输出端（14）处提供控制信号在存储构件（22）处的充电电压小于极限的时间段 正弦振荡的值。 该电路装置可用于通过瞬时HF载波脉冲来维持被激励振荡的谐振电路的振荡。